Blacksmith&#39;s blower.



No. 653,486. Patented luly I0, |900. J. W. ROBINSON.

BLACKSMITHS BLOWER.

(Applicatioq med Mar. 12, 1900.)

(No Model.)

f IIIlllllllzlllmllmunm Fries.

ATENT JOHN W. ROBINSON, OF PITTSBOROUGH, INDIANA.

BLACKSM lTHS BLOWER.

SPECIFICATION forming part of Letters Patent No. 653,486, dated July 10, 1900.

Application filed March IZ, 1900.

T0 all whom, 7125 19a/ay concern.-

Be it known that I, JOHN W. ROBINSON, a citizen of the United States, residing at Pittsborough, in the county of Hendricksand State of Indiana, have invented certain new and useful Improvements in Blacksmiths Blowers, of which the following is aspecifica-tion.v

This invention relates to improvements in motors for operating the blowers for -blacle smiths forges; and the object of the invention is to provide a spring-actuated motor that will be cheap to maintain and that will be inexpensive as to first cost, durable, and easily operated.

I accomplish the objects of the invention by the mechanism illustrated in the accompanying drawings, in which- Figure l is a View in side elevation of my invention, showing the inclosing case of the motor mechanism in vertical section and part of the frame to support the gears broken away and the hub and part of the spokes of the band-wheel also broken away and removed for the purpose of unobstructing the View of the parts beyond. Fig.`2 is a planV View of the mechanism shown in Fig. l, and Fig. 3 is a View in perspective of the brakeleVer and adjustable notched plate for holding the lever. l

Like characters of reference indicate like parts throughout the several views of the drawings.

A represents the blower-case, having a shaft A', on which is mounted a fan B, (shown in dotted lines in Fig. 1,) all of usual and well-A known construction. The shaft A' has a pulley c, which is connected by the belt O with the larger wheel 9 of the motor, which latter I will now proceed to describe.

D and D are the frames which support the shafts and wheels of the clockwork mechanism.

d is a shaft supported by the frames D and D', on which shaft the vcogged Wheel l is mounted loosely, and E is a spiral spring which has one of its ends attached to the shaft and the other fastened to the wheel l. On theA side of the wheel opposite the spring is the ratchet-wheel e, mounted in a xed position on the shaft and held by dog e against the action of the spring E. d is a second shaft Serial No. 8,306. (No model.)

parallel with Shaft a, on which is loosely mounted cogged wheel la. same as E, which has one end fastened to shaft d' and the other fastened to wheel l". The shaft d' has ratchet-wheel e2, 'which is held by dog e3 against the action of the spring E. The shafts d and d project outside of the frame on one side of the'latter and are squared to receive a crank or key for winding up the springs E and E.

d2 is a shaft mounted between shafts d and d. It has a small pinion 2, which meshes with the teeth of both of the cogged wheels l and la. Also mounted on shaft 032 is the larger cogged wheel 3, which meshes with teeth of smaller cogged wheel et, immediately above it on shaft d3. The shaft d3 also has the larger cogged wheel 5, which meshes with smaller wheel 6 on shaft d4. The shaft d4 also has larger wheel 7, which meshes with smaller wheel 8 on shaft d5, and the shaft d5 carries the combined pulley and ily-wheel 9. The wheel 9 is belted, as previously stated, to pulley a2 on the blower-shaft. The shaft d5 also has a friction-wheel 10 on the opposite end from wheel 9,against which a brake-bar 1l is made to contact with force regulated to stop the mechanism entirely or to regulate the rapidity of movement of same. This lever is pivoted at its inner end p and has its other end projected outside of the Vcasing M, which incloses the mechanism. It has the curved portion 19 in order to contact with as much of the surface of the friction-wheel as possible and is provided with a sliding Weight W, by moving which on the bar the pressure against the wheel l0 can be regulated. By depressing the outer end of the brake-bar l1 sufficiently the entire movement of the wheels will be stopped and the action of the motor will be started by releasing the brake-lever. By partially releasing it the mechanism can be run at a speed less than its maximum equal to the retarding pressure exerted by the brake-bar. By having a series of stops to hold the bar ll at Various adjustments I am able to regulate the pressure against the wheel l0, and thereby regulate the speed of the motor. To

carry out this adjustment practically, I will provide a vertical slot s through the end of the casing M through which the brake-bar E' is a spring,

IOO

l1 is projected and will provide notches in the side of the slot, into which the bar will be caught by a lateral movement thereof.

Inasrnuch as a careful adjustment of speed is required to give the desired blast at the forge and as the notches might not be properly positioned owing to a change in conditions caused by improper first construction or by a springing of the brake-bar out of shape, I provide a sliding plate P to cover the slot in the casing M, which plate I slot for the passing of the end of the brake-bar and provide with lateral notches p', into which the bar will be placed by a lateral movement of said bar. The plate P will work between the guides r r and will be held and moved by the set-screws t 2f in a manner the wheels to the shafts said wheels having pawl-and-ratchet mechanism a shaft having a fly-Wheel, a belt connecting this ily-wheel with the pulley on the blower, said y-wheel shaft being connected by a train of cogged wheels with the shafts carrying the springs, a friction-wheel on the same shaft as the iy- Wheel, a brake-bar pivotally secured at one of its ends and having a curved portion to contact under certain conditions with the friction-Wheel,a casingsurrounding the motor mechanism having a slot in its wall through which the bar is projected, a sliding plate working in guides on the outside of the casing and having a slot through which the brake bar is projected, said slot having notches to receive the bar and hold it and set- 

